ICD-10-CM > Q00-QA0 > Q65-Q79 > Q72 > Q72.4 Q72.4 Longitudinal reduction defect of femur Non-Billable/Non-Specific Applicable To Proximal femoral focal deficiency Codes Q72.40Longitudinal reduction defect of unspecified femurQ72.41Longitudinal reduction defect of right femurQ72.42Longitudinal reduction defect of left femurQ72.43Longitudinal reduction defect of femur, bilateral